Megalomaniac

"The Skinner of Mons" leaves behind a legacy of terror and death, but it's his children who must live with the consequences. Martha, struggling with insecurity and instability, is forced to confront her father's dark legacy when she's brutally attacked at work. As she descends into madness, she finds herself drawn into a world of violence and revenge, following in her brother's footsteps as they continue their father's deadly work. But can they escape the shadow of their father's crimes, or will they succumb to the same darkness that consumed him?

You can stream Megalomaniac on: Shudder

Some movies that have similar genres and were produced around the same time as Megalomaniac include The Empty Man, Infinity Pool, False Positive, Ghostland, Hereditary, Color Out of Space.